HARD FILM-COATED CUTTING TOOL

WIPO Patent Application WO/2023/177050

A1

The objective of the present invention is to provide a hard film-coated cutting tool having excellent welding resistance and wear resistance. To achieve the objective as above, the hard film-coated cutting tool according to the present invention comprises: a hard base material; and a hard film formed on the hard base material, wherein: assuming that, at a rake surface of the hard film, a colorimetric diffusion reflectance value is LSCER and a total reflectance value is LSCIR, the relationship of 0.65≤LSCER/LSCIR≤0.85 is satisfied, and when surface roughness is measured on the rake surface of the hard film within the range of 100 ㎛ from the edge, an arithmetic average height SaR is within the range of 0.2 ㎛≤SaR≤0.5 ㎛; and assuming that, at a flank surface of the hard film, a colorimetric diffusion reflectance value is LSCEF and a total reflectance value is LSCIF, the relationship of LSCEF/LSCIF≥0.9 is satisfied, and when surface roughness is measured on the flank surface of the hard film within the range of 100 ㎛ from the edge, an arithmetic average height SaF is within the range of 0.15 ㎛≤SaF≤0.4 ㎛.

JP2013180473	TRANSPARENT GAS BARRIER FILM, ORGANIC EL ELEMENT, SOLAR CELL, AND THIN-FILM BATTERY
WO/2017/169448	FILM-FORMING APPARATUS AND FILM-FORMING METHOD
JP3859518	TRANSPARENT MOISTURE BARRIER FILM

JO YEONG JU (KR)
KIM KYOUNG IL (KR)
GWON JIN HAN (KR)
KIM HYUNG JIN (KR)
AHN SEONG YEON (KR)
AHN SEUNG SU (KR)
PARK JE HUN (KR)

PCT/KR2022/020473

September 21, 2023

December 15, 2022

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KORLOY INC (KR)

C23C14/06; B23B27/14; B23B51/00; B23C5/10; C23C14/00; C23C14/32

KR20130006666A	2013-01-17
KR20140039290A	2014-04-01
JP2008264975A	2008-11-06
JP2010228016A	2010-10-14
KR20150050460A	2015-05-08

IAM PATENT FIRM (KR)

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